CN109387900A - Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle - Google Patents
Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle Download PDFInfo
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- CN109387900A CN109387900A CN201811426805.7A CN201811426805A CN109387900A CN 109387900 A CN109387900 A CN 109387900A CN 201811426805 A CN201811426805 A CN 201811426805A CN 109387900 A CN109387900 A CN 109387900A
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- guide plate
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- light guide
- light source
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 16
- 230000001154 acute effect Effects 0.000 claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 13
- 238000000576 coating method Methods 0.000 claims abstract description 13
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 3
- 230000002776 aggregation Effects 0.000 abstract 1
- 238000004220 aggregation Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 10
- 239000003292 glue Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000011514 reflex Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 206010049155 Visual brightness Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0045—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide
- G02B6/0046—Tapered light guide, e.g. wedge-shaped light guide
- G02B6/0048—Tapered light guide, e.g. wedge-shaped light guide with stepwise taper
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The present invention provides the light guide plate of adjustable emergent light angle, backlight module and liquid crystal display device, the light guide plate includes light incident surface, reflecting surface, exit facet, two parallel sides of the light source to side and between the reflecting surface and the exit facet, the reflecting surface is equipped on a declining curve to side and by the close ladder-like micro-structure to thin setting from light incident surface to light source, the ladder-like micro-structure includes the first plane and the second plane with plane setting at an acute angle, the width of first plane is gradually increased along direction of the light incident surface to light source to side, the width of second plane is gradually reduced along direction of the light incident surface to light source to side.Light guide plate provided by the present invention is by selecting the included angle between first and second plane, light source will be incident to project to after the incident light adjustment shooting angle on the reflectance coating of side from exit facet, it realizes aggregation of the light guide plate emergent light towards light source side, adapts to various liquid crystal display die sets and meet various visual demands.
Description
Technical field
The present invention relates to backlight module field, more particularly to the light guide plate of adjustable emergent light angle, backlight module with
And liquid crystal display device.
Background technique
With liquid crystal display opening up in application fields such as mobile phone, Vehicular display device, personal digital assistant and television sets
Exhibition, proposes requirements at the higher level to the backlight technology based on light guide plate.Such as: going out for the light of light guide plate is required in vehicle-mounted backlight
Direction is penetrated close to lamp source side, meets visible angle direction.This has higher want to the direction of backlight emergent light and angle
It asks.However at present in backlight source module, common several guide-lighting plate shapes, such as horn mouth light guide plate (as shown in Figure 6), plate
Light guide plate (as shown in Figure 7), Wedge shape light conduction board (as shown in Figure 8), light be from LED project, through the light guide plate total reflection or
The refraction etc. of site is finally projected from the side far from light source.It can be seen that from the shooting angle of light, the design of above-mentioned light guide plate is simultaneously
The whole control of angle is not accounted for, therefore presented far from light source direction from the emergent light of light guide plate exit facet, it is best
Phenomenon is also that emergent light is overlapped with normal, cannot be not appropriate for all liquid crystal display die sets to project by the angle of close to sources.
Summary of the invention
To overcome above-mentioned the deficiencies in the prior art, the present invention provides a kind of light guide plate of adjustable emergent light angle, backlight
Mould group and liquid crystal display device are applicable to the liquid crystal display die set of the various prior arts, are suitble to various vision needs.
The light guide plate of adjustable emergent light angle provided by the invention, the light guide plate include light incident surface, reflecting surface, go out
Face, light source are penetrated to side, and two parallel sides between the reflecting surface and the exit facet, the light guide plate
Reflecting surface is equipped with ladder-like micro-structure on a declining curve to side from light incident surface to light source, and the ladder-like micro-structure is from light
The plane of incidence to light source to side by close to thin setting, the ladder-like micro-structure includes the first plane and with the first plane is in
Second plane of acute angle setting, the width of first plane are gradually increased along direction of the light incident surface to light source to side, institute
The width for stating the second plane is gradually reduced along direction of the light incident surface to light source to side.
The source emissioning light of light guide plate light incident surface side is arranged in, and to travel to light source anti-to side via light source to side
It penetrates, the intensity of the femoral reflex light gradually weakens side to light source side from light source, therefore the width light of the first plane is incident
Face is gradually increased to direction of the light source to side, the width of second plane along light incident surface to light source to the direction of side by
Decrescence small structure can make the emergent light after projecting light guide plate from the reflected light that light source is reflected back side more evenly.
The width of the light incident surface is less than light source to the width of side.
Further, first plane is the parallel surface parallel with light guide plate exit facet, and second plane enters to light
Penetrate face inclination.
Further, the acute angle between first plane and the second plane is set as 0 °~40 °, more preferably, should
Acute angle is 5 °~15 °.
Further, first plane is the first inclined-plane being arranged horizontal by angle, and second plane is to light
Plane of incidence inclination, second plane and the setting at an acute angle of the first inclined-plane.It is possible thereby to preferably promote the transmitting light of light source from
Light source is transferred in light guide plate to side.
Further, 10 ° of angle < of first inclined-plane and horizontal plane, between first inclined-plane and the second plane
Acute angle is set as 0 °~40 °, and more preferably, which is 5 °~15 °.
Sharp angle, which is arranged, can control within the above range from its exit direction of the emergent light of light guide plate exit facet injection
Close to light source direction, sharp angle is smaller, and light will be got over towards light source, and the determination of specific angle will be according to different liquid crystal displays
Depending on the brightness demand of mould group.
Its reflecting surface of light guide plate with above structure is equipped with several sites.The setting of site can be further by reflected light
Scattered reflection.
The present invention also provides backlight modules, including light source, diffusion barrier and with the adjustable outgoing of structure as previously described
The light incident surface side of the light guide plate is arranged in the light guide plate of angular, the light source, and the diffusion barrier setting is led described
On the exit facet of tabula rasa.
Further, the backlight module further includes reflectance coating, and the reflectance coating includes two ontologies, respectively first
Body and the second ontology, the first noumenon are provided close to the bottom surface of the light guide plate reflecting surface, and the second ontology is provided close to described lead
To the side of side, the light being incident upon on the second ontology is reflected into the ladder-like micro-structure tabula rasa light source, then is reflexed to out
Penetrate face.
The present invention also provides liquid crystal display devices comprising foregoing backlight module.Because of the back of liquid crystal display device
Optical mode group includes the light guide plate of above structure, therefore can be according to the sharp of two interplanar of micro-structure ladder-like on light guide plate reflecting surface
The setting of angle angle, controls the shooting angle of emergent light, obtains expected visual brightness effect.
Compared to the prior art, the present invention has the following technical effect that
1) light guide plate of adjustable emergent light angle of the invention be arranged on its reflecting surface from incident side to light emission side by
It is close to thin ladder-like micro-structure, can by source emissioning light via light guide plate light incident surface to light guide plate light source to side it
It is reflected again via ladder-like micro-structure afterwards, realizes its orientation angle of emergent light projected from light guide plate exit facet by close to sources side
To adapt to the visual demand of various liquid crystal display die sets.
2) light guide plate of adjustable emergent light angle of the invention, ladder-like micro-structure is by the first plane mutually at an acute angle
And constituted towards inclined second plane of light incident surface, via reflectance coating reflection light again via the second plane reflection after
Emergent light can be assembled towards light source side, and angle is arranged in the acute angle by adjusting the first plane and the second plane, can satisfy not
With liquid crystal display device to the brightness demand of light source side direction.
3) compared to it is traditional light source is set to the thicker side of Wedge shape light conduction board width for, tool provided by the present invention
There is the backlight module of aforementioned structure light guide plate, by the setting of the second ontology of reflectance coating in light source to side side, this second
Body increases the incidence range of incident light, changes to when being incident to the light beam in light guide plate from light incident surface and being reflected back in light guide plate
It has been apt to " lamp eye " phenomenon.
4) at the same time, width of the light source of light guide plate of the present invention to the width of side relative to light incident surface, when injection molding
It can also not only can choose from light source to side into glue, therefore in injection molding from light guide plate light incident surface side into glue
It is more into glue position, production technology is simplified, conducive to the injection molding of light guide plate, overcomes gas that is bad into glue effect and generating
The technological deficiency of bubble, white line, speckle etc.
Detailed description of the invention
Fig. 1 is the light guide plate overall structure diagram of the adjustable emergent light angle of the present invention.
Fig. 2 is that Fig. 1 marks enlarged diagram at B.
Fig. 3 is the overall structure diagram for the backlight module that the present invention has light conducting plate structure shown in Fig. 1.
Fig. 4 is structural schematic diagram and its light the transmission schematic diagram of light guide plate of the present invention and reflectance coating.
Fig. 5 is that light guide plate of the present invention is equipped with the structural schematic diagram of site and its light transmits schematic diagram.
Fig. 6 is the structural schematic diagram of horn mouth light guide plate in the prior art.
Fig. 7 is the structural schematic diagram of flat light guide plate in the prior art.
Fig. 8 is the structural schematic diagram of Wedge shape light conduction board in the prior art.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figure 1, the light guide plate 400 of adjustable emergent light angle, including light incident surface 410, reflecting surface 420, outgoing
To side 440 and other two side, the other two side is arranged in parallel, and is separately connected the reflection for face 430, light source
Face 420 and exit facet 430, the reflecting surface 420 of the light guide plate 400 equipped under being in side 440 from light incident surface 410 to light source
The ladder-like micro-structure of drop trend, the ladder-like micro-structure are set by close to what is dredged along light incident surface to direction of the light source to side
It sets.
As shown in Fig. 2, the ladder-like micro-structure include first plane 421 parallel with light guide plate exit facet 430 and with
Second plane 422 of the first plane setting at an acute angle, second plane 422 are tilted to light incident surface 410, and described first is flat
It is arranged between face 421 and the second plane 422 in included angle A 1, A1 is acute angle, which is 5 °.
Embodiment 2
As shown in figure 3, backlight module, including iron frame 100, the glue frame being placed in iron frame 100 200 and is placed in glue frame 200
The interior light guide plate 400 with adjustable emergent light angle described in 1 structure of embodiment, reflectance coating 300, FPC500, LED600,
Fixed glue 700, diffusion barrier 800 and optical diaphragm 900.The FPC500 is fixedly connected with LED600, and the LED600 is set
It sets in 410 side of light incident surface of light guide plate, the reflectance coating 300 includes two ontologies, respectively the first noumenon 310 and the
Two ontologies 320, the first noumenon 310 are provided close to the bottom surface of 400 reflecting surface 420 of light guide plate, and the second ontology 320 is provided close to leaded light
400 light source of plate is to the side of side 440, and for the setting of diffusion barrier 800 on light guide plate exit facet, diffusion barrier top is additionally provided with the light
Diaphragm 900 is learned, really, on this basis, the films such as bright enhancement film, upper bright enhancement film and prism film under can also being arranged on diffusion barrier
Piece.
As shown in figure 4, the light that light source led 600 issues passes through light source to the second ontology of the reflectance coating 300 on 440 side of side
320 are reflected back in light guide plate 400, which reflexes to light guide plate 400 through the second plane 422 of ladder-like micro-structure
Exit facet 430 form emergent light, this reflects the direction of the emergent light 610 of light guide plate 400 towards light source side, i.e. normal α
Left side.
It is adjusted in the present embodiment 2 and provided by embodiment 1 in 400 structure of light guide plate of emergent light angle, institute
Stating included angle A 1 is 5 °, to reflex to the emergent light 610 and 400 exit facet 430 of light guide plate of exit facet 430 by the second plane 422
The angle of upper normal α i.e. the second included angle A 2 is more than or equal to 0 °, less than 45 °.
In the back light module unit structure provided by the present embodiment 2, through due to the wide part that light source issues and leaning on close to sources
The second ontology 320 reflection to side 440, therefore closer to light source to the position of side 440, light intensity is bigger, light quantity
More；Conversely, light intensity is smaller further away from light source to the position of side 440, light quantity is also less.Thus in order to further
Keep the brightness of emergent light 610 more uniform, it is wider closer to first plane 421 of the light source to side 440, the second plane 422
Length is shorter, and narrower further away from first plane 421 of the light source to side 440, the length of the second plane 422 is longer.
At the different distance of facing light sources on reflecting surface 420, the light intensity and light quantity size reached is also
Difference, therefore, the brightness finally generated may also be different.Therefore, by ladder-like micro- knot of 400 reflecting surface 420 of light guide plate
Structure from light incident surface 410 to light source to side 440 by close to thin setting, reached the reflecting effect to the light of different location
With the adjusting of opposite 430 convergent effect of exit facet so that 610 brightness of emergent light for converging to exit facet 430 on the whole is more equal
Even, the display effect as a result, on display pannel is more preferable.
Referring to Fig. 5, the reflecting surface 430 on the light guide plate 400 is equipped with several sites 423, then at left and right sides of normal α
There is uniform light injection, using the direction normal α as benchmark direction, form a similar coniform or round table-like output optical zone domain,
It is applicable in various vision needs.
In conclusion the light guide plate of adjustable emergent light angle provided by the present invention is arranged to enter from light on its reflecting surface
Penetrate face to light source to side by close to thin ladder-like micro-structure, and a part of reflectance coating is arranged in light guide plate light source opposite side
It is by means of there is the second plane being obliquely installed in ladder-like micro-structure that reflectance coating reflected light is angularly anti-to carry out light reflection by face
It penetrates, makes final light direction close to light source direction, to meet the needs of different visual directions.
Certainly, for ladder-like micro-structure, the first plane can also be for first horizontal by 10 ° of < settings tiltedly
Sharp angle range between face, with the second plane is specifically chosen in the range of 0 °~40 °, as long as guaranteeing by the second plane
Angle i.e. the second angle for reflexing to normal on the emergent light and light guide plate exit facet of exit facet is more than or equal to 0 °, i.e. less than 45 °
Can, specifically with the brightness demand of different liquid crystal display device dipped beam sources depending on.
The above is merely preferred embodiments of the present invention, be not intended to restrict the invention, it is all in spirit of the invention and
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.
Claims (10)
1. a kind of light guide plate of adjustable emergent light angle, which is characterized in that the light guide plate include light incident surface, reflecting surface,
Two parallel sides of exit facet, light source to side and between the reflecting surface and the exit facet, the light guide plate
Reflecting surface be equipped with ladder-like micro-structure on a declining curve to side from light incident surface to light source, the ladder-like micro-structure from
Light incident surface to light source to side by close to thin setting, the ladder-like micro-structure include the first plane and with the first plane
The width of second plane of setting at an acute angle, first plane is gradually increased along direction of the light incident surface to light source to side,
The width of second plane is gradually reduced along direction of the light incident surface to light source to side.
2. the light guide plate of adjustable emergent light angle according to claim 1, which is characterized in that first plane be with
The parallel parallel surface of light guide plate exit facet, second plane are tilted to light incident surface.
3. the light guide plate of adjustable emergent light angle according to claim 1 or 2, which is characterized in that the acute angle setting
It is 0 °~40 °.
4. the light guide plate of adjustable emergent light angle according to claim 1, which is characterized in that first plane be with
First inclined-plane of horizontal plane setting at an acute angle, second plane are tilted to light incident surface, second plane and the first inclined-plane
Setting at an acute angle.
5. the light guide plate of adjustable emergent light angle according to claim 4, which is characterized in that first inclined-plane and water
10 ° of the angle < of plane, the acute angle are set as 0 °~40 °.
6. the light guide plate of adjustable emergent light angle according to claim 3 or 5, which is characterized in that on the light guide plate
Reflecting surface be equipped with several sites.
7. the light guide plate of 6 adjustable emergent light angle according to claim, which is characterized in that the light source of the light guide plate
It is greater than the width of light incident surface to the width of side.
8. backlight module, including light source, diffusion barrier, which is characterized in that further include as it is of any of claims 1-7 can
The light guide plate of emergent light angle is adjusted, the light incident surface side of the light guide plate, the diffusion barrier setting is arranged in the light source
On the exit facet of the light guide plate.
9. backlight module according to claim 8, which is characterized in that further include reflectance coating, the reflectance coating includes first
Ontology and the second ontology, the first noumenon are provided close to the bottom surface of the light guide plate reflecting surface, and second ontology is set to
Close to the light guide plate light source to the side of side, the light being incident upon on the second ontology is reflected into the ladder-like micro-structure,
Exit facet is reflexed to again.
10. liquid crystal display device, which is characterized in that including backlight module described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426805.7A CN109387900A (en) | 2018-11-27 | 2018-11-27 | Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811426805.7A CN109387900A (en) | 2018-11-27 | 2018-11-27 | Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109387900A true CN109387900A (en) | 2019-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811426805.7A Pending CN109387900A (en) | 2018-11-27 | 2018-11-27 | Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle |
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| Country | Link |
|---|---|
| CN (1) | CN109387900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113900302A (en) * | 2021-09-30 | 2022-01-07 | 天马微电子股份有限公司 | Backlight module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6305813B1 (en) * | 1999-08-11 | 2001-10-23 | North American Lighting, Inc. | Display device using a light guide for exterior automotive lighting |
| US20020021563A1 (en) * | 2000-03-30 | 2002-02-21 | Kazumasa Ohsumi | Light guide plate, surface ligjht source device and display |
| US20140009508A1 (en) * | 2012-05-18 | 2014-01-09 | Reald Inc. | Controlling light sources of a directional backlight |
| CN105785499A (en) * | 2016-05-18 | 2016-07-20 | 京东方科技集团股份有限公司 | Side-entrance type light guide plate assembly, side-entrance type backlight module and display device |
| CN105892150A (en) * | 2016-06-08 | 2016-08-24 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN108845386A (en) * | 2018-08-09 | 2018-11-20 | 京东方科技集团股份有限公司 | Light guide plate and its manufacturing method, backlight |
| CN209102945U (en) * | 2018-11-27 | 2019-07-12 | 深圳市隆利科技股份有限公司 | Light guide plate, backlight module and the liquid crystal display device of adjustable emergent light angle |
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2018
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| CN113900302A (en) * | 2021-09-30 | 2022-01-07 | 天马微电子股份有限公司 | Backlight module and display device |
| CN113900302B (en) * | 2021-09-30 | 2023-10-24 | 天马微电子股份有限公司 | Backlight module and display device |
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Application publication date: 20190226 |